Description

GE DS200TCCBG1B Mark V Series Extended Analog I/O Board

The GE DS200TCCBG1B, also cataloged as the DS200TCCB Extended Analog I/O Board, operates as a dedicated hardware component for analog signal conditioning and acquisition within Mark V Speedtronic turbine control system platforms.

Hardware Specifications

Parameter	Specification
Model	DS200TCCBG1B
Brand	GE
Origin	USA
Weight	0.45 kg
Operating Temp	-30 to +65 deg C
Power Consumption	150 mA @ 5 VDC
Board Type	Extended Analog I/O Board (TCCB)
Onboard Microcontroller	Intel 80196
Supported Inputs	4-20 mA, 0-1 mA, RTD (Pt100/Pt1000), low-voltage analog
Resolution	12-bit A/D conversion
Board Connectors	Dual 50-pin IDC connectors (JCC, JDD)
Communication Interface	Proprietary Mark V parallel backplane bus
Galvanic Isolation	707 VDC channel-to-backplane isolation
Relative Humidity	5-95% RH, non-condensing

Deterministic Backplane Communication and Channel-to-Channel Isolation

The board leverages an onboard Intel 80196 microcontroller to execute hardware-level signal conditioning, digital filtering, and sensor linearization directly at the acquisition node. High-density parallel backplane bus communication velocity allows deterministic data transfer to the primary processing core without imposing processing overhead on the central controller. To prevent ground loops in complex field wiring topologies, the module incorporates 707 VDC channel-to-backplane galvanic isolation, ensuring signal integrity across high-noise industrial environments and maintaining signal scaling stability for critical control loops.

Frequently Asked Questions

Q: What precautions must be taken regarding power removal prior to replacing the DS200TCCBG1B board?

A: The DS200TCCBG1B does not support active hot-swapping. Complete power removal from the R5 core rack and de-energization of all field I/O loop power supplies must be verified prior to removing or inserting the board to prevent backplane damage and sensor surge current spikes.

Q: How are onboard calibration settings and firmware revisions preserved during board replacement?

A: Calibration parameters and operational firmware reside within socketed PROM modules onboard the board. When replacing a unit, the original PROM chips must be swapped to the new board hardware or the system memory reconfigured via Mark V diagnostic tools to maintain control calibration parity.

Field Installation Guidelines

Proper handling and mounting procedures are critical to ensuring continuous operation of the DS200TCCBG1B module:

1. ESD Grounding Standards: Always wear a grounded wrist strap connected to the cabinet frame ground before removing the board from its anti-static shielding enclosure.
2. Mechanical Fastening: Slide the board card-edges smoothly into the designated slot inside the Mark V R5 cabinet enclosure. Ensure all retention screws are fully tightened to secure board grounding chassis paths.
3. Cable Routing and Strain Relief: Connect the dual 50-pin IDC ribbon connectors (JCC and JDD) securely to their respective pin headers. Ensure ribbon cables are seated square without applying side-tension to the connector pins.
4. Shield Termination: Terminate all field analog cable shielding at the single-point cabinet ground bar using bare metal clamps. Do not ground instrument cable shields at both ends to prevent circulating ground currents across analog channels

Specifications

• Brand: General Electric

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems